% -*- encoding: utf-8 -*-

\documentclass{article}
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simple  math test
 $x = y ^2 Ω∑∆∏$
 \begin{equation}
\int _0 ^\infty  f(x)\, dx
\end{equation}

$\char "1D400 \char"1D7FF $
$𝐀;𝟿; 𝒟$

\end{document}
